<div class="echarts-container">
  <ngx-echarts [option]="option" [group]="group1"></ngx-echarts>
  <ngx-echarts [option]="option" [group]="group2"></ngx-echarts>
</div>
<div class="echarts-container">
  <ngx-echarts #echarts1 [option]="option"></ngx-echarts>
  <ngx-echarts #echarts2 [option]="option"></ngx-echarts>
</div>
